HK81796A - Detector circuit - Google Patents

Detector circuit

Info

Publication number
HK81796A
HK81796A HK81796A HK81796A HK81796A HK 81796 A HK81796 A HK 81796A HK 81796 A HK81796 A HK 81796A HK 81796 A HK81796 A HK 81796A HK 81796 A HK81796 A HK 81796A
Authority
HK
Hong Kong
Prior art keywords
signal
track
detector circuit
data
players
Prior art date
Application number
HK81796A
Other languages
English (en)
Inventor
Guenter Gleim
Friedrich Fueldner
Bernd Rekla
Original Assignee
Thomson Brandt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK81796A publication Critical patent/HK81796A/xx

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0948—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Air Bags (AREA)
  • Burglar Alarm Systems (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Enzymes And Modification Thereof (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Lock And Its Accessories (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
HK81796A 1989-09-30 1996-05-09 Detector circuit HK81796A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3932831A DE3932831A1 (de) 1989-09-30 1989-09-30 Detektionsschaltung
PCT/EP1990/001595 WO1991005340A1 (de) 1989-09-30 1990-09-20 Detektionsschaltung

Publications (1)

Publication Number Publication Date
HK81796A true HK81796A (en) 1996-05-17

Family

ID=6390658

Family Applications (1)

Application Number Title Priority Date Filing Date
HK81796A HK81796A (en) 1989-09-30 1996-05-09 Detector circuit

Country Status (15)

Country Link
EP (1) EP0494892B1 (xx)
JP (1) JP2854131B2 (xx)
KR (1) KR100227668B1 (xx)
CN (1) CN1020009C (xx)
AT (1) ATE119706T1 (xx)
AU (1) AU6418690A (xx)
DD (1) DD298325A5 (xx)
DE (2) DE3932831A1 (xx)
ES (1) ES2071829T3 (xx)
FI (1) FI921365A0 (xx)
HK (1) HK81796A (xx)
HU (1) HUT61118A (xx)
MY (1) MY107309A (xx)
TR (1) TR24612A (xx)
WO (1) WO1991005340A1 (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538936B1 (en) * 1991-10-23 1997-01-08 Koninklijke Philips Electronics N.V. Device for scanning a record carrier
JP2002150572A (ja) * 2000-11-07 2002-05-24 Sanyo Electric Co Ltd ディスク装置
DE10062079A1 (de) * 2000-12-13 2002-06-27 Thomson Brandt Gmbh Verfahren zum Spurzählen und entsprechendes Gerät zum Lesen und/oder Beschreiben eines optischen Aufzeichnungsträgers
JP4245436B2 (ja) * 2003-08-08 2009-03-25 パナソニック株式会社 ディフェクト検出装置
WO2008122917A1 (en) * 2007-04-05 2008-10-16 Koninklijke Philips Electronics N.V. Optical disc drive with delayed layer jump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4855977A (en) * 1987-07-27 1989-08-08 Laser Magnetic Storage International Company Track seeking apparatus and method using sampled information

Also Published As

Publication number Publication date
JPH05500577A (ja) 1993-02-04
EP0494892A1 (de) 1992-07-22
DE3932831A1 (de) 1991-04-11
MY107309A (en) 1995-11-30
CN1050637A (zh) 1991-04-10
EP0494892B1 (de) 1995-03-08
AU6418690A (en) 1991-04-28
HUT61118A (en) 1992-11-30
FI921365A (fi) 1992-03-27
ATE119706T1 (de) 1995-03-15
ES2071829T3 (es) 1995-07-01
HU9200995D0 (en) 1992-06-29
KR100227668B1 (ko) 1999-11-01
JP2854131B2 (ja) 1999-02-03
CN1020009C (zh) 1993-03-03
DE59008679D1 (de) 1995-04-13
WO1991005340A1 (de) 1991-04-18
FI921365A0 (fi) 1992-03-27
KR920704281A (ko) 1992-12-19
DD298325A5 (de) 1992-02-13
TR24612A (tr) 1992-01-01

Similar Documents

Publication Publication Date Title
EP0245511A4 (en) OPTICAL CARD READER.
MY130581A (en) Write once optical disc recording apparatus
MY109893A (en) Optical information recording or reproducing apparatus.
KR900008413B1 (ko) 레코드 캐리어로부터 판독된 정보 신호를 구형 신호로 변환시키는 회로장치
KR920005265B1 (ko) 기록 캐리어의 정보 재생장치
KR850003028A (ko) 정보재생장치
EP0397354A3 (en) Device for detecting cross talk level of optically read signal
KR870009348A (ko) 광학식 기록장치
HK81796A (en) Detector circuit
MY104267A (en) Optical pick-up devices
KR900002267A (ko) 광자기 메모리 장치와 광메모리 장치
KR890005673A (ko) 광학 스캐닝 장치의 트래킹 제어회로
DE3867612D1 (de) Geraet zur wiedergabe von daten.
DK572888D0 (da) Apparat til gengivelse af data
CA2086289C (en) Optical information recording and reproducing apparatus
KR20020056961A (ko) 자기 광학 컴퓨터 메모리 장치내의 데이터 결함 보상 시스템 및 방법
EP0324859A4 (en) Error signal generator circuit
US5181196A (en) Erase mark detecting circuit for detecting an erase mark superimposed on data recorded on a sector of an optical recording medium
KR100312324B1 (ko) 제로크로싱레벨정합장치및그방법
MY107291A (en) Counting circuit
MXPA02003982A (es) Medio de grabacion optico, substrato para el medio de grabacion optico y dispositivo de disco optico.
KR19990055444A (ko) 광 디스크 재생장치의 디스크 흠집 감지회로
JPH01307923A (ja) 欠陥検出回路
JPH02152018A (ja) トラック通過信号検出装置
JPS63213122A (ja) 光学式記録再生装置

Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20100919